Summary of Significant Accounting Policies - Schedule of Total Revenue Disaggregated by Service Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Aug. 27, 2022	Aug. 28, 2021	Aug. 29, 2020
Disaggregation of Revenue [Line Items]
Total revenues	$ 2,000,822	$ 1,826,216	$ 1,804,159
Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	100.00%	100.00%	100.00%
Core Laundry Operations
Disaggregation of Revenue [Line Items]
Total revenues	$ 1,770,502	$ 1,615,560	$ 1,601,485
Core Laundry Operations | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	88.50%	88.50%	88.80%
Specialty Garments
Disaggregation of Revenue [Line Items]
Total revenues	$ 152,885	$ 145,454	$ 133,185
Specialty Garments | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	7.60%	8.00%	7.40%
First Aid
Disaggregation of Revenue [Line Items]
Total revenues	$ 77,435	$ 65,202	$ 69,489
First Aid | Revenue | Revenues
Disaggregation of Revenue [Line Items]
Percentage of revenues	3.90%	3.50%	3.90%